Measurement of the t(t)over-bar charge asymmetry in events with highly Lorentz-boosted in collisions at √s=13 TeV
Yazarlar (1)
Prof. Dr. Hasan OĞUL Sinop Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Physics Letters Section B Nuclear Elementary Particle and High Energy Physics (Q1)
Dergi ISSN 0370-2693 Dergi Bilgileri (2023)
Makale Dili İngilizce Basım Tarihi 11-2023
Cilt / Sayı / Sayfa 846 / 1 / 137703–0 DOI 10.1016/j.physletb.2023.137703
Makale Linki https://doi.org/10.1016/j.physletb.2023.137703
UAK Araştırma Alanları
Fen Bilimleri ve Matematik
Özet
The measurement of the charge asymmetry in top quark pair events with highly Lorentz-boosted top quarks decaying to a single lepton and jets is presented. The analysis is performed using proton-proton collisions at s= 13 TeV with the CMS detector at the LHC and corresponding to an integrated luminosity of 138 fb− 1. The selection is optimized for top quarks produced with large Lorentz boosts, resulting in nonisolated leptons and overlapping jets. The top quark charge asymmetry is measured for events with a t t¯ invariant mass larger than 750 GeV and corrected for detector and acceptance effects using a binned maximum likelihood fit. The measured top quark charge asymmetry of (0.42− 0.69+ 0.64)% is in good agreement with the standard model prediction at next-to-next-to-leading order in quantum chromodynamic perturbation theory with next-to-leading-order electroweak corrections. The result is also …
Anahtar Kelimeler
CMS | Top quark